Improvement in gas-heaters



E.BARNES Gas-Heaten -Patented Nov 5,1872.

NQ.132,793' r|c.2.

UNrrED *STATES EDWARD BARNES, or LONDON, ENGLAND, AssIGNOE 'ro JOHN BATEMAN,

vPA'rEN'r N OFFICE..

OF SAME PLACE.

IMPROVEMENT IN GAS-HEATERS.V

Specification forming part of Letters Patent No. 132,793. dated November 5, 187:2.

ient, and economical heating apparatus Where! in the heat is produced by the combustion of gas mixed with atmospheric air, and which is provided with means of adjustment whereby the mixture of the air and gas may be so regulated that a very great heat is obtained with a very small consumption of gas, and Without any offensive or injurious odor.

Description of the Drawing.

Figure 1 is a plan of my improved gas stove or furnace. Fig. 2 is a Vertical section of the same on the line' x, Fig. 1.

The said stove is constructed with a block, a, of fire-clay, fire-brick, cement, or other suitable refraetory'substance. The said block is inclosed, secured, and supported Within a stand or frame, b, which is made of thin sheetiron, tin, cast-iron, vor other suitable material, and is preferably extended below the block a and provided with apertures b for the admission of air. At or near the center of the block a I `form through the same a hole, a', or two or more of such holes, into which I insert a tube or tubes, c, perforated with small holes c and open at the top. The said tubes may be formed of Wire-gauze or other similar material. rlhe length of thetube c should be about equal to the thickness of the block a, and should be so fitted to `the hole a as to move freely up and down therein. To the bottom of this tube c is attached a pipe, d, which extends through a vertical slot or aperture, e, in the side of the stand b, and is connected outside the same toa flexible pipe or tube, f, by which the gas is supplied to the apparatus, The pipe d is formed with anges d', which are so fitted to the sides of the slot e as to hold the said pipe firmly While permitting its adjustment up and down uin the said slot. This contrivance forms a simple `and convenient means for supporting and adjusting the tube c within the hole a; but, if desired, other suitable devices may be used for this purpose. At the top `of the block a over the hole a I place a circular box or burner, g,-

Which is closed atthe top, but has side perfo` rations g. The gas from the pipe f passes up the perforated tube c, and is mixed therein with atmospheric air, 'which' enters through the perforations c', and the mingled air and gas escaping from the holes g" around the box g in numerous jets is there ignited and burned. By adjusting the tube c in the hole a the supplyof air may be increased or diminished according to the pressure of the gas, and, therefore, the air and gas may be combined in such proportions as to insure perfect combustion, and the stove will give great heat without emitting any offensive odor and with great economy of gas. To increase the heating effeet of the stove I place on the top of the same around the circular box or burner g an annular mass or ring, h, of twisted wire, wire-gauze,

iron cuttings or shavings, or other non-inflamj y mable material; and I also place upon the top of the stove around the said case g a ring or hoop, fi, of thin sheet metal, which is support` ed by the brackets j, a space being left be-V tween the said ring and the top of the stove, as shown in Fig. 2. The annular massi of twisted wire or other material insures au equal distribution of the `heat produced by the jets of burning air and gas, and the metallic ring i prevents the too rapid dissipation of the heat laterally, and also permits the admission of a regulated supply of air through the space rin-- der its lower edge. The said ring or -hoop t is so fitted between the brackets or arms j 'that it is supported thereby with a i capability of vertical adjustment, and this arrangement affords a ready means of adjustment to regulate the admission of air below the said ring. These brackets 7' form a support for` any vessel, utensil, or article to be heated.

By setting the ring or hoop j down upon the top of the stove, close enough to close the aperture below the said ring and entirely preventing the admission of air through the same, I obtaina diffused flame within the said ring; and when used in this manner my stove will be found very advantageous in photographic and other operations `as a substitute for the spirit-lamps ordinarily employed for such pur poses. To allow the ring to be thus set down upon the stove it must have slots i to pass over the shoulders j.

Claims.

1. In a gas stove or furnace, the block a of fire-clay or other suitable refractory material supported by and Within a metal frame7 the perforated tube c or number of such tubes adjustable Within the said block7 and attached to the gas-supply pipe and the perforated box or burner g, constructed and combined substantially as herein set forth for the purposes specified.

specified.

E. BARNES.

Witnesses:

GHAs. J. Gooorr, NV. J. LOWE. 

